EP 3140609 A1 20170315 - DEVICE FOR MEASURING THE DEPTH OF A WELD SEAM IN REAL TIME
Title (en)
DEVICE FOR MEASURING THE DEPTH OF A WELD SEAM IN REAL TIME
Title (de)
VORRICHTUNG ZUR MESSUNG DER TIEFE EINER SCHWEISSNAHT IN ECHTZEIT
Title (fr)
DISPOSITIF DE MESURE DE LA PROFONDEUR D'UN CORDON DE SOUDURE EN TEMPS RÉEL
Publication
Application
Priority
- DE 102014115278 A 20141020
- EP 2015074024 W 20151016
Abstract (en)
[origin: WO2016062636A1] The invention relates to a device for measuring the depth of a weld seam in real time in the case of the welding or joining of a workpiece by means of radiation, comprising: a measurement light source, the light of which is coupled into a reference arm (18) and into a measurement arm (19) by a beam splitter (17); a collimator module (21), which has at least one collimating lens (29) for collimating a measurement light beam (23), which is fed to the collimator module (21) by means of an optical waveguide (20) in the measurement arm (19), and for imaging the measurement light beam (23) reflected back by a workpiece to be processed onto an outlet/inlet surface (26) of the optical waveguide (20); an incoupling element (24) for coupling the measurement light beam (23) into the beam path of a processing beam (10); a focusing lens (25) for jointly focusing the measurement light beam (23) and the processing beam (10) onto the workpiece and for collimating the measurement light beam (23) reflected back; and an evaluating unit (15) for determining the depth of a weld seam, into which evaluating unit the measurement light reflected back by the workpiece is directed together with the superposed, reflected-back light from the reference arm (18). The collimator module (21) comprises means for setting the axial focus position of the measurement light beam (23), means for setting the lateral focus position of the measurement light beam (23), and a field lens (28), which is arranged between the outlet/inlet surface (26) of the optical waveguide (20) and the collimating lens (29) and which defines the beam expansion of the measurement light beam (23) and thus the focus diameter of the measurement light beam (23).
IPC 8 full level
G01B 5/00 (2006.01); B23K 26/03 (2006.01); G01B 11/22 (2006.01)
CPC (source: CN EP US)
B23K 9/0956 (2013.01 - US); B23K 15/0013 (2013.01 - US); B23K 15/02 (2013.01 - US); B23K 26/032 (2013.01 - EP US); B23K 26/21 (2015.10 - EP US); B28B 17/0081 (2013.01 - US); G01B 5/0037 (2013.01 - CN EP US); G01B 9/0203 (2013.01 - US); G01B 11/22 (2013.01 - CN EP US)
Citation (search report)
See references of WO 2016062636A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2016062636 A1 20160428; CA 2961278 A1 20160428; CA 2961278 C 20180327; CN 107076546 A 20170818; CN 107076546 B 20180828; EP 3140609 A1 20170315; EP 3140609 B1 20170913; JP 2018501964 A 20180125; JP 6462140 B2 20190130; US 10967452 B2 20210406; US 2017326669 A1 20171116
DOCDB simple family (application)
EP 2015074024 W 20151016; CA 2961278 A 20151016; CN 201580056717 A 20151016; EP 15784005 A 20151016; JP 2017540314 A 20151016; US 201515520719 A 20151016